Transfer machine



Aug-29,1939 C. L. HEVNDERSON 2,170,896

TRANSFER MACHINE 5 Sheets-Sheet 1 Filed Jan Aug; 29, 1939.

C. L. HENDERSON TRANSFER MACHINE Filed Jan. 10, 1938 5 Sheets-Sheet 3-fizverzz or C/Q/ZGS 15 62681921507; 3M), av 00 0. Q 0-h! Aug. 29; 1939.

-c. HENDERSON TRANSFER MACHINE Filed Jan. 10, 1938 5 Sheets-Sheet 41939- c. HENDERSON 2,170,896

TRANSFER MACHINE I Filed Jan. 10, 1958 5 Sheets-Sheet 5 Patented Aug.29, 1939 UNITED STATES PATENT OFFICE TRANSFER MACHINE Charles L.Henderson, Appleton, Wis "liner to Paper Patents Company, Neenah, Wis acorporation of Wisconsin Application January 10, 1938, Serial No.184,180 17 Claims. (or. 95-73) The present application is a continuationin part of my co-pending application Serial No. 130,647 which was filedon March 13, 1937, and which is assigned to the assignee of the presentinvention.

There has long been a need in the photogravure printing art forapparatus operable to photographically transfer designs or picturesdirectly from suitable photographic transparencies, or the like,,tosensitized printing cylinders, especially cylinders of large diameters,thereby v eliminating the use of the carbon tissue or simi-.

lar means new employed in making rotogravure cylinders. This need hasbeen met in part by the apparatus disclosed in my co-pending applicationSerial No. 130,647, but where headroom. is limited the verticalapparatus may become impracticable on account of the height needed tohandle large diameter cylinders. Accordingly, the principal object ofthe present invention is to provide an improved apparatus of the subjecttype which can be used in conjunction with large printing cylinders ofvarying diameters,

and which will operate at high light intensities,

in order to minimize the printing time.- Another object of the presentinvention is to provide an improved light source for use in conjunctionwith transfer apparatus of the previously described general type whichmay be located beneath-the printing cylinder and the photographictransparency bearing the picture or design which is to be transferred,thereto during the transfer operation. It might be mentioned at thispoint that the positioning of the light source beneath the cylinder andthe transparency during the transfer operation has heretofore beenconsidered impractical, chiefly because of the inability of prior artapparatus to provide for dissipation of the great amount of heatliberated by a high intensity light source.

' Further objects of the invention are to provide an improved means forobtaining high pressure line contact between a photographictransparency, especially one of the plate type, and the sensitizedsurface of a printing cylinder during transfer operations of the typecontemplated herein, and generally to provide an improved, easilyoperable transfer machine according to the principal object of theinvention. Other objects and further important advantages of theinvention will be made apparent by reference to the accompanyingdrawings and the following description of one particularly satis- 6factory embodiment of the invention. Referring to these drawings,

Figure 1 is a perspective view of a complete transfer machine embodyingthe principles of the present invention; 10

Figure 2 is a plan view, partially in section, of the transfer machineillustrated more completely in Figure 1;

Figure 3 is a fragmentary sectional view on the general line 3-3 ofFigure 2; 15

Figure 4 is a. sectional view on the general line 4-4 of Figure 1;

Figure 5 is a fragmentary view illustratingthe automatic operation ofthe support means for the carrier plate for the photographic trans- 20parencies or designs which are to be transferred to the sensitizedprinting cylinder;

Figure 6 is a fragmentary view'illustrating certain of the features ofthe improved pressure securing mechanism utilized for accomplishing 25linecontact between the transparency and the sensitized printingcylinder;

Figures 7 and 8 are fragmentary views illustrating the features of theactuating mechanism, for the pressure securing means; 30

Figure 9 is a perspective view of one of the presser members forming apart of the pressure securing means;

.Figure 10 is a sectional view on the general ,line |0l0 of Figure 9;

, 35 Figure 11 is a perspective view of the reflector and light hoodused in conjunction with the apparatus of my invention; and

Figure 12 is a diagrammatic view illustrating the heat transfer meansconstituting a part of my invention.

As illustrated particularly in Figures 1 and 2, the transfer mechanismof my invention is provided with a rigid base frame I 3, rectangular inoutline and preferably formed of welded, struc- 5 tural steel channels.A pairof upstanding, cast metal, end yokes I! are bolted to the ends ofthe base frame l3 and serve to support a pair of spaced, cylindricalguides l1 in exactly parallel relation. 50 The transfer of the design orpicture which it is desired to reproduce on the printing cylinderis mostsatisfactorily accomplished by the use of 111m transparencies preferablyprepared in accordance with the methods disclosed in my 55 co-pendingapplication, Serial No. 105,852. During the transfer operation thesetransparencies are carried upon a flat plate i 9, preferably ofrelatively thick, plate glass, which is supported at its'ends upon apair of spaced cross heads 2!. The cross heads 2i are provided withjournal portions adapted to slidably engage the cylindrical guides l1and are rigidly held in spaced relationship by a pair of channel sections 23 bolted or'otherwise afiixed thereto. To aid in positioning andholding the carrier plate IS, the cross head members 2| are providedwith positioning slots 25 adapted to receive the ends of the glasscarrier plate l9, and to minimize the danger of breaking the glasscarrier plate l9 during use, suitable cushion'supports 26 of rubber orthe like are provided in the slots 25. Adjustable clamp members 21having resilient bearing portions 28 (Figure 3) ,are provided forclamping the ends of the carrier plate I9 inplace within the slots 25.

The cross head members 2| are slidable upon the guides l1, and hencetogether with the side .channels 23 constitute a. rigid support for thecarrier plate l9 by means of which it becomes possible to move that latelongitudinally from one end of the machine to the other in tangen-- tialcontact with the cylinder during the transfer operation. Movement of thecarrier plate support upon the guides I1 is accomplished by a pair ofdriving screws 29 supported at one end upon the lefthand yoke l5 (Figure2) and adapted to engage suitable threaded portions in the adjacentcross head 2|. The screws.29 are mechanically interconnected by means oftwo gears 3|, one of which is keyed to the outer end of each screw, andashaft 33 having worm gears 34 for engaging the gears 3i. The shaft. 33is adapted to be driven by a variable speed/ motor drive mechanism 35through a pair of right angle hand gears 36, only the uppermost of whichis visible in Figure 2. Y

The drive mechanism 35 is illustrated particularly in Figure 2- andincludes a constant speed motor 31 having a drive shaft 38 connected atone end bya belt 39 to a high speed drive pulley 40 which is supportedupon, and is freely rotatable relative to, a hollow shaft or sleeve M.The sleeve H is slidably keyed to the main shaft M which operates thedriving element of the right angle gears 36. The other end of the motordrive shaft 38 engages agear reduction mechanism 42 which is connectedby a chain belt 44 to a low speed drive pulley 43, also supported upon,and freely rotatable relative to, the sleeve 4!. A friction clutch 45 ispositioned at either end of the sleeve Bi, and these clutches 45 areactuable, in response to movement of a handle 45, tolcon- 'nect eitherof the drive pulleys 40 or 43 to the shaft 4 l whereby that shaft andthe drive screws 29 for the carrier plate support may be driven ateither high or low speed.

During the transfer operation the'sensitized printing cylinder, asillustrated at 47, is supported transversely of the transfer machine atsubstantially the mid point thereof, and as an aid to securing theproper degree of contact pressure between transparencies carried uponthe carrier plate 59 and the surface of the printing cylinder, it isdesirable that the cylinder support shall be vertically adjustable. Thestructure illustrated in the drawings is provided withsuch a supportmeans, this means including a pair of hollow, cast or fabricated,uprights 49 extending between the longitudinal sections of the baseframe 5 3 and the guide members 11. Yokes 5| adapted to engage ballbearings 50 or the like located on the ends of the printing cylinder 41are vertically adjustably supported upon these uprights 49 by means oftwo pairs of cylindrical members 52 which slidably engage suitable guidepassageways formed-in the uprights 49. The lower ends of each pair ofthese members 52 are connected'together by a cross head 53. A threadedlift rod 53 engages each of the cross heads 53 at its upper end, and atits lower end engagesa cam 53 (Figure 4) formed in a shaft 54 extendingtransversely across themachine. It'will be evident that when this shaftis rotated, as by the crank 54, it will be possible to raise or lowerthe cylinder supporting yokes 5| a suflicient distance to permit thesurface of the printing cylinder 41 to be brought into tangentialcontact with the upper surface of the transparencies positioned upon thecarrier plate I9. By the use of lift rods 53 having threaded engagementwith the supports for the printing cylinder, it is a simple matter toadjust the height of the cylinder supportin order that the machine mayaccommodate.

cylinders of various diameters. A look nut 54? is preferably provided oneach of the lift rods 53 'for maintaining the adjustment of those rodsduring use of the machine.

During the transfer operation,a narrow beam 1 of light of very highintensity is directed through the plate l9 and the transparenciescarried thereon along the lineof tangential contact with the printingcylinder 41. At the same time, the transparency carrier plate 49 isslowly traversed from one side of the machine tothe other, the rate ofmovement determining the duration of the exposure, and during thistraversing movement the glass plate and the transparencies carriedthereon are maintained ,in tangential contact with the cylinder. Toaccomplish satisfactory transfer of the design or picture formed in thetransparencies it appears necessary that there be relatively highcontact pressure along the line of tangency of the printing cylinder andthe transparencies carried on the plate Hi. This pressure incidentallyproduces suflicient friction between the printing cylinder and thesurface of the transparencies carried on the carrier plate l9 to causerotation of the printing cylinder at a peripheral speed exactly equalto. the rate of movement of the transparency carrier plate' l9 when thatplate is traversed from one side of the machine to the tangentialcontact between the printingcylinder and the transparencies carried onthe plate it constitutes one of the most important features of thepresent invention, and is illustrated in some detail in Figures 3 and 6through 10. Generally speaking, this means constitutes a pair ofelongated presser members 55 (adapted to be pressed against the undersurface of the transparency carrier plate I9 at either side of, and

very close to, the line of tangential contact be-,

tween the upper surface of the transparency carrier plate It and theprinting cylinder. The pres'sermemhers 55, as'is illustratedparticularly in Figures 3, 6, and 9, are provided with antifriction,bearing portions 56 of hard fiber or simi- I lar material for engagingthe under Jected to only relatively slight bending stresses /'65 to theindividual surface of the transparency carrier plate I I. I Y

Because of the considerable length of the presser members 55 and theheavy pressures which they must exert, those members are supported by aplurality of spaced support arms 91 adjustably attached thereto by bolts59. or the like, as illustrated in Figures 3 and 9. These sup- ,portarms 51 are pivotally supported intermediate their ends by two suitablypositioned shafts 59 which extend transversely of the machine, and

to prevent bending of the shafts 59, they are supported intermediate thearms 51 by bearing blocks 6| bolted or otherwise attached to rigid crossmembers 63, the ends of which are bolted to the central uprights 49. Theoutwardly projecting end of each of the support arms 51 is biased tobring the associated presser member 55 into contact with the undersurface of the transparency support plate l9 by means of a compressionspring 65, the reaction force of which is transmitted to the support armthroughv a pin 61 which extends through a suitable passageway inthetransverse supports 63 for the shafts 59. v I

It willbe apparent that through the use of the separate support arms 51located at spaced intervals along the length of the presser members 55,it is possible to obtain very high contact pressure between the uppervsurface 01 the transparency carrier plate I9 and the surface of thecylinder in tangential contact therewith, Further, since the line ofapplication of the force exerted. by the presser members '55 is locatedonly a short distance to either side of the line of tangential contact,the transparency carrier plate i9 is subduring the transfer operation.

The edges 01' the presser members 55 are utilized to determine the widthof the slot 69 through which the light passes during the transferoperation, and since the openings 10 for receiving the shanks of thebolts 59 which serve to attach the support arms 51 to the pressermembers 55 are elongated (see Figures 9 and 10), it

-is possible to readily adjust the width of this slot 69.

It is desirable that the presser members 55 shall bear against the underside of the transparency carrier plate 19 only when the printing.cylinder is in tangential contact with that plate. Accordingly, theapparatus includes means for relieving the pressure exerted by thepresser members 55 whenever the operator may so desire. This means, asis illustrated particularly in Figures ,3, 6, and 8, constitutes a pairof elongated, transversely extending members 1| arranged for verticalmovement into and out of engagementv with the lower ends of the pins 61which transmit the reaction forces of the compression springs armsupports 51 for the pressure members. Suitable guides 13 and 14determine the path of movement of the spring release members 1|, and thesimultaneous raising and lowering of these release members is efl'ectedby means of two mechanically interconnected, transversely extendingshafts 15 which are con.- nected to the release members 11 throughsuitable toggle linkages 16, the shafts 15 being actuated in response tothe rotation of a crank 11 by other toggle linkages 18.

The means utilized to produce the high intensity beam of light which isdirected through the transparency carrier plate i9 and thetransparencies carried thereon during the exposing of prises a reflectorunit 83.

. a unitary reflector and lamp structure. The light hood 19 is rigidlysupported upon the central uprights 49 as is illustrated in Figures 3and 4. The bottom of the hood 19 is open, and the top is provided with anarrow slot 81 which aligns with the light slot proper i9.

The unitary reflector and lamp structure comgenerally rectangular inoutline, which serves as the frame of the structure and four automaticarc lamps supported upon said reflector unit. 'The carbons 81 of theselamps 95 extend into the reflector unit through suitable openings 88formed in the sides thereof, and to aid in attaining maximumillumination, the inner surface of the reflector unit 83 is formed todeflne four separate reflector sections 99, one for each arc.

83, the reflector and lamp structure is preferably supported by. meansso arranged that that struc-- ture may be readily moved fromits normalposition beneath the hood 19 to a position such as is. indicated by thedotted lines 9 I" in Figure 3. In the machine illustrated in thedrawings, this support means includes a pair of guide members 93 rigidlysupported upon the central uprights 49. These guide members are adaptedto be slidably engaged by two supporting brackets 95,-one of which isafllxed to either end of the reflector unit 89. Slidable movement of thestructure on the guides 93 15 preferably accomplished by lneans of twotoggle linkages 91, actuated in unison by a transverse shaft 98, theshaft being operated by a suitable crank 99.

The physical construction of the automatic arc lamps 85 is not animportant part of the present invention and various commerciallyavailfable types may be used. To minimize printing time, however, it isvery desirable that the arc lamps shall be of suflicient capacity toproduce a beam of very high light intensity. The embodiment of theinvention illustrated in the drawings is provided with four, ampere arclamps spaced apart about 12 inches from center and positioned so thatthe distance from the centerof the carbonsto the bottom surface of thetransparency support plate 19 is about 10 inches. It should be notedthat the arc lamps and reflector assemblage and the hood 19 are normallypositioned directly beneath the line of contact of the printing cylinderand the transparency carrier plate 19. This arrangement, as suggestedpreviously, is an important feature of the present invention andconstitutes a radical departure from the constructions heretoforeutillized in the art. A

There are numerous advantages resulting from the positioning of the arclamps and reflector assemblage directly beneath the area of contactbetween the transparency carrier plate 19 and the cylinder. For example,debris from the car bons is thereby prevented from falling in thedirection of the transparency supporting plate be utilized at higherand, generally, the cost of the apparatus is materially lessened. Yetdespite these advantages, prior to the present invention it wasconsidered highly impractical, if not in fact dangerous, to locate thearc lamps and reflector assemblage of a high intensity light sourcebeneath the printing area, primarily due to the excessive heating whichoccurredat the printing area.

The'apparatus of the present invention eifectively accomplishes thedissipation of this heat by means of a cooling system of a veryparticular type. As illustrated, in Figures 3 and 4, the walls of thereflector housing 83 -are hollow and are provided with inlet andv outletpipes lol and I02 whereby a cooling liquid may be continually circulatedthrough the hollow interior thereof. Likewise, the walls of the hood I9are also of hollow construction,'and inlet and outlet pipes I 03'and I04are provided to permit cooling liquid'to be circulated therethrough. Ofeven more importance than the hollow wall construction of the reflector83. and the hood 19,

the presser members 55 are of hollowconstruc- During operation of themachine the several inlet and outlet pipes are connected together byconduits I01, preferably as illustrated in Fig-.

ure 12, and a suitable cooling liquid is forced through the hollowinterior of the presser memhas 55, the hood I9, and the reflector 83 inthe order stated. In combination, this arrangement makes possible thelocation of the arc lamps and reflector assemblage beneath thetransparency carrier while permitting-the use of very high intensityillumination. It is not necessary, of course, to use a recirculatingsystem for the cooling liquid; ordinary city water, for example, may beused as the cooling liquid, the water which is heated by passing throughthe machine being discharged into the sewer.

Since the transparency carrier plate I9 must I of necessity be rather.long in order to accommodate sufficient copy for a large diameterprinting .cylinder, it is desirable to provide means intermediate thecross heads 2i for supporting that plate as it is traversed from one endto the other of the machine during a transfer operation. One means foraccomplishing this is illustrated in Figure 5 and comprises two'sets ofthree transverse support members I09 which are connected to each otherso as to be maintained in fixed relationship by suitable tie rods III.Three of the support members I09 are located on each side of the pressermembers and both ends H2 of each of the support members I09 are accurateand adapted to slidably engage the guide rods I! with a bearingengagement. If desired; the upper surface of the support members- I 09may be covered with a strap II3 (Figure 4) of fiber or like material toprevent scratching the under side of the transparency carrier plate I9.It will be evident that when the transparency carrier plate I9 istraversed from one side of the machine to the other the supportgnembersI09 will be moved between the two extreme positions illustrated inFigures 2 and 5, to continuously provide support forthe intermediateportions of the carrier plate I9.

\ bers 21.

more light is emitted from the upper side of the horizontal arc lampthan from any other side:

During normal operation of the transfer machine, photographictransparencies or the like bearing the defsign which it is desired totransfer to the printing cylinder will preferably be stripped onto theglass transparency carrier plate I9 by any one of the means known to theart. The plate I9 will then be placed in position upon the cross heads2! constituting a part of the carrier plate support mechanism and willbe fastened in position by tightening down the clamp mem- The printingcylinder 41 to whichv a suitable sensitized coating has been previouslyapplied will then be placed in position upon the supportingyokes 5|, andwith the transparency will be operated to release the biasing springs 61for the presser members 55, whereupon those members will be moved intoengagement with the under side of the transparency carrier plate I9 ateither side of the line of tangential contact between the cylinder andthe upper surface of the carrier plate IS. The pressure exerted bythesprings 61 assures even high pressure contact between the surface of-thecylinder and the upper surface of the transparency carrier plate I9during the transfer operation.

Next, motor driven mechanism 31 which actuates the drive screws 29 forthe transparency carrier plate support will be energized, andsimultaneously arc lamps '85 constituting the light source will beturned on. The exposing or transfer operation then proceedsautomatically, the

glass plate bearing the transparencies being trav-r ersed at a uniformrate of speed horizontally across the machine in tangential contact withthe peripheralsurface of sensitized printing cylinder 41 which rotateswith a peripheralspeed exactly equal to the speed of movement of thetransparency supporting plate.

Suitable limit switches II5 serve to automatically stop the drivingmotor 37 for the drive screws 29 and to shut off the arc lamps 05 at theconclusion of the transfer operation. The lever-TI is then operated torelieve the force exerted on the under surface of the plate i9 by thebiasing springs 95 for the presser members 55, following which theprinting cylinder 51 may be removed from'the machine, developed andetched. It is,

of course, evident that cylinders which are exact duplicates'of eachother may be producedin this manner.- Heretofore; it has been consideredpractically impossible to produce duplicate cylinders, especially byprocesses which require the use of carbon tissue, as in rotogravure.

It will be apparent that the apparatus which I have described in theforegoing is capable of accomplishing the objects of the invention in amost satisfactory manner. Through the use of cooling means of theparticular described type, it is possible to employ a very highintensity light source located beneath the line of contact between thetransparencies carried on the transparency carrier plate and theprinting cylinder. Further, this location of the light source not onlyeliminates the manifold objections of light sources located above or atthe side of the printing cylinder, but, in addition, renders the entireapparatus much easier and much more flexible to operate, especially byfacilitating the placing of the printing cylinder in position thereon.

The apparatus of my invention includes means for securing high pressurealong the printing parency carrier plate regardless of the width of suchplate. Also, the device includes means for adequately supporting thetransparencycarrier plate throughput the transfer operation.

It will be evident that the principles which have been disclosed in theforegoingare capable of embodiment into structures of various types.Accordingly, it is my desire that the accompanying claims shall beaccorded the broadest possible construction consistent with the languageappearing therein and the prior art.

I claim the following as my invention:

1. In apparatus of the class described, means for supporting a printingcylinder for rotatable movement about a horizontal axis, means includinga flat, relatively rigid plate member for supporting a photographictransparency forhorizontal, longitudinal movement beneath and intangential contact with said cylinder, means for longitudinally movingsaid transparency in tangential contact with said cylinder, meansincluding a pair of spring actuated, elongated presser members locatedrespectively on opposite sides of and closely adjacent to the line oftangential contact between said cylinder and said transparency forcreating sufilcient pressure along said ,line of tangential contact tocause said cylinder to be rotated when said transparency is movedlongitudinally solely because of the frictional contact therebetween,and means located beneath said transparency and said cylinder fordirecting a relatively narrow, high intensity beam of light between saidpresser members and through said transparency along said line oftangential contact, the separation of said presser membersdetermining'the width of said beam.

.2. In a transfer machine of the class described, the combination of amain frame, parallel guideways on said frame disposed in a horizontalplane, a frame for carrying a photographic transparency slidably mountedon said guidewayaa printing cylinder rotatably mounted aboveandcrosswise of said. last named frame, means for longitudinally movingsaid last named frame with said transparency in tangential contact withthe periphery of said cylinder, spaced hollow presser onto said cylinderat the area of contact therebetween, and means for circulating a coolingfluid through said presser plates.

3. In a transfer machine of the class described, the combination of amain frame, parallel guide- .ways on said frame disposedv in ahorizontal plane, a frame for carrying a photogra ic transparencyslidably mounted on said guideways, a printing .cylinder rotatablymounted above and crosswise of said last named frame, meansforelongitudinally moving said last named frame with said transparencyin tangential contact with the periphery of said cylinder, spaced saidpresser plates and the jackets of said beam creating and directing meansin series.

' 4. In a transfer machine of the class described,

the combination with a rotatable printing cylinder, and means foreifecting rectilinear movement of a horizontally disposed photographictransparency carrier plate in tangential contact with said cylinder, ofmeans for pressing said carrier plate against said cylinder adjacent theline of contact comprisingan elongated presser plate underlying saidcarrier plate, a fixed support, a group of levers pivoted intermediatetheir ends on said support and carrying said presser plate on one armthereof, headed pins mounted in the other arms of said levers, andthrust springs confined between said support and the heads of said pinsand through said levers forcing said presser plate against the underside of said carrier plate.

5. In a transfer machine of the class described,

the combination with a rotatable printing cylinder, and means foreifecting rectilinear movement of a horizontally disposed photographictransparency carrier plate in tangential contact with said cylinder, ofmeans for pressing said carrier plate against said cylinder adjacent theline of contact comprising an elongated presser plate underlying saidcarrier plate, a fixed support, a group of levers pivoted intermediatetheir ends on said support and carrying said presser plate on one armthereof, headed pins mounted in and depending from the other arms ofsaid levers, thrust springs confined between said support and-the heads"of said pins and through said levers forcing said'presser plate againstthe under side of said carrier plate, and means for simultaneouslylifting said pins to relieve the pressure of said presser plate on saidcarrier plate.

6.,In a transfer machine of the class described, the combination with arotatable printing cylinder, and means for effecting rectilinear move-'ment of a horizontally disposed photographic transparency carrier platein tangential contactwith said cylinder, of means for pressing saidcarrier platei'against said cylinder'adjacent the line of contactcomprising an elongated presser plate imderlying said carrier plate, afixed support, a group of levers pivoted intermediate their ends on saidsupport and carrying said presser plate on one arm thereof, headed pinsmounted in and depending from the other arms of said levers, thrustsprings confined between said support and the heads of said pins, alifter bar underlying said pins, and means for bodily raising saidlifter bar into lifting contact with said pins whereby to relieve thepressure of said presser plate on said carrier plate.

7. In apparatus of the class described, means for'supporting a printingcylinder for rotatable movement about a horizontal axis, means includinga flat, relatively rigid plate member for supporting a photographictransparency for horizontal, rectilinear movement beneath and intangential contact with said cylinder, meansfor longitudinally movingsaid plate member and transparency while said transparency is intangential contact with said cylinder, means for creating sufilcientpressure along the line of tangential contact between said cylinder andsaid transparency to cause said cylinder to be rotated in response tolongitudinal movement of said transparency and said transparency supportplate solely because of the frictional contact 'therebetween, said lastmentioned means including at least one elongated presser member arrangedto engage the under surface of said transparency support plate adjacentsaid line of tangential contact.

8. In apparatus of the class described, means for supporting a printingcylinder for rotatable movement about a horizontal axis, means includinga fiat, relatively rigid plate member for supporting a photographictransparency for horizontal, rectilinear movement beneath and intangential contact with said cylinder, means for longitudinally movingsaid plate member and transparency while said transparency is in tan-'-gential contact with said cylinder, means for creating suflicientpressure along the line of tangential contact between said cylinder andsaid transparency to cause said cylinder to be rotated in response tolongitudinal movement of said transparencyand said transparency sup:port plate solely because of the frictional contact therebetween, saidlast mentioned means' including at least one elongated presser membersupported at spaced intervals along its length and biased to engage theunder surface of said transparency support plate adjacent said line,

of tangential contact.

9. In apparatus of the class described, means for supporting a printingcylinder for rotatable horizontal, rectilinear movement beneath and intherebetween, said last mentioned means includ.

, transparency support plate adjacent'said line of movement aboutv ahorizontal axis, means in eluding a flat, relatively rigid plate memberfor supporting a photographic transparency for tangential contact withsaid cylinder, means for longitudinally moving said plate member andtransparency while said transparency is in tangential contact with-saidcylinder, means for creating sufiicient pressure along the line oftangential contactbetween said cylinder and said transparency to causesaid cylinder to be rotated in response to longitudinal movement of saidtransparency and said transparency support plate solely because of thefrictional contact ing at least one elongated presser member arranged toengage the under surface of said tangential contact, said presser memberbeing of hollow construction, and said apparatus including means forcirculating a cooling liquid through said hollow presser member.

10. In a transfer machine of the class described, the combination of amain frame, parallel guideways on said frame disposed in a horizontalplane, 'a flat, relatively rigid plate for supporting a photographictransparency, a frame supporting said transparency support plate forslidable movement on said guideways, a freely rotatable printingcylinder mounted above said transparency support plate crosswise of thedirection of movement thereof, the peripheral surface of said cylinderbeing in tangential contact with the transparency supported upon saidtransparency support plate, means for moving said supporting frame andsaid transparency iriction.

11. In-a transfer machine of the class de- 2,17o,see

operation of said machine, means for producing suflicient pressurebetween the transparency supported upon said transparency support plateand said cylinder along said line of tangential contact to cause saidcylinder to be rotated at a peripheral speed equal to the speed oflcngitudinal movement of said transparency carrier plate solely becauseof the frictional engagement between said transparency carrier plate andsaid printing cylinder, .said last mentioned means comprising at leastone elongated presser member supported'at spaced intervals along itslength and biased to engage the under surface of said transparencysupport plate adjacent said line of tangential contact.

12. In apparatus of the' class described, a printing cylinder, means forsupporting said cylinder for rotatable movement about a horizontal axis,means including a fiat, relatively rigid plate member for supporting aphotographic transparency, for horizontal, rectilinear. movement beneathand in tangential contact with said cylinder, means for longitudinallymoving said plate member and transparency while said transparency is intangential contact with said cylinder, means for producing suflicientpressure along the line of tangential contact between said cylinder andsaid transparency to cause said cylinder .to be rotated in response tolongitudinal movement of said transparency and said transparency supportplate, means located beneath said transparency support plate and saidcylinder for directing a narrow, highintensity beamof light through.said transparency support plate and said transparency along said line oftangential contact, and means for pre- (Venting excessive heating ofsaid transparency along ,said line of tangential contact including atleast one hollow, elongated member which slidably engages the undersurface of said transparency support'plate adjacent said line oftangential contact, and means for circulating cool- 'ing fluid throughsaid hollow member. 13. In a transfer machine of' the class 'described,the combination of a main frame, parallel guideways on said framedisposed in a horizontal plane, a fiat, relatively rigid plate forsupporting'a photographic transparency, a frame for supporting saidtransparency support plate for slidable movement on said guideways, 5aprinting cylinder rotatably mounted above said transparency supportplate crosswise of the direction of movement thereof, the peripheralsurface of said cylindenbeing in tangential contact with thetransparency supported upon said transparency supportpiate, means forlongitudinally moving said supporting frame and said transparencysupport plate during the operation.

of said machine, means including at least one elongated, hollow pressermember adapted to parency carrier plate to produce suflicient pressurebetween the transparency supported upon said transparency. support plateand said cylinder to cause said cylinder to be rotated in response tomovement of said transparency and said transparency support plate, meanslocated beneath said transparency support plate and said cylinder fordirecting a narrow, high intensity beam of light through saidtransparency support plate and said transparency along said line oftangential contact, and means for circulating cooling fluid through saidpresser member.

14. In a transfer machine of the class described, a main frame, 'meansincluding a flat, relatively rigid plate member for supporting aphotographic transparency for horizontal, rectiiinear movement on saidmain frame, a printing cylinder disposed above and crosswise of thedirection of movement of said transparency support plate, bearingsforthe end pintles of said cylinder, a vertically adjustable support memberfor each of said bearings mounted on said main frame, and means forsimultaneously raising and lowering said bearing support members andsaid bearings: predetermined equal amounts, said last mentioned meanscomprising a rock shaft journaled in, and crosswise of, said main frameand duplicate cams integrally attached to said rock shaft and arrangedto cooperate with said vertically adjustable support members to effectthe simultaneous raising or lowering of said bearing support membersinresponse to rotation of said rock shaft.

15. In a transfer machine of the class described, the combination of amain frame, parallel guideways on said frame disposed in a horizontalplane, a fiat, relatively rigid transparency support plate, a secondaryframe supporting said transparency support plate for slidable move.-ment on said guideways, means for traversing said secondary frame andsaid transparency support plate from one end of said machine to theother, and automatic means for supporting said plate at spaced intervalstherealong during said traversing operation, said last mentioned meanscomprising a plurality of elongated support members which are arrangedcrosswise of the direction of movement of said transparency carrierplate and which are moved to supporting positions in response tomovement of said secondary frame, each end of each of said supportmembers slidably engaging one of said guide members, said supportmembers being arranged in two sets,

one of which is located on either side of the longitudinal center of thepath of travel of said transparency support plate, and correspondingmembers of each set being mechanically connected to each other-so as tobe maintained in fixed, spacedrelationship whereby when said secondaryframe and said transparency support plate is moved from one end of saidmachine .to

theother the molt members of client wi l tively narrow,

be moved in the direction of said center of movement in sequence, whilethe corresponding support members of the other set will be moved awayfrom said center of movement so as to progressively support the carrierplate as it is traversedfrom one end of said machine to the other.

16. In apparatus of the class described, a printing cylinder, means forsupporting said cylinder for rotatable movement about its longitudinalaxis, a photographic transparency, means including a ilat, relativelyrigid plate member for supporting said transparency for rectilinearmovement while in tangential contact with the surface of said cylinder,means for longitudinally moving said plate member and said transparencywhile said transparency is in tangential contact with said cylinder,means for directing a relaconcentrated beam of light through saidtransparency and onto said cylinder along the line of tangential contacttherebetween, means for securing an intimate pressure engagement betweensaid cylinder and said transparency along said line of tangentialcontact, said last mentioned means including two elongated, hollowpresser members each of which is resiliently biased into engagement withsaid transparency support plate adjacent said line of tangentialcontact, and means for circulating a cooling fluid through said hollowpresser members.

through said transparency and onto said cylinder 1 along the line oftangential contact therebetween, means for securing an intimate pressureengagement between said cylinder and said transparency along said lineof tangential contact, said last mentioned means including twoelongated, hollow presser members each of which is arranged to bearagainst said transparency support plate at one side of and adjacent tosaid line of tangential contact, a stationary frame, and a plurality ofspring-pressed support arms mechanically connected at one end to saidframe and at theother end to said presser members at spaced intervalsalong the length thereof for supporting said presser members and forbiasing said presser members into engagement with said transparencysupport plate, and means for circulating a cooling fluid through saidhollow presser members.

I CHARLIE LIHINDERSON.

